Summer repair works were completed at Petrozavodskaya CHPP


On 3 July, Petrozavodskaya CHPP resumed hot water supply after the end of the summer Repair and Maintenance Programme according to the schedule approved by the city administration. Within two weeks, the energy workers performed a large amount of work, providing safe operation of the plant and the main heating grids for preparation to the autumn and winter heating period 2019/2020.

The workers carried out technical diagnosis and overhaul of the transit pipelines on results of hydraulic tests and planned pittings, as well as repair of heat chambers of the main heating grids.

"The damages of the direct heat pipeline under the roadway were diagnosed during the hydraulic tests of the main heating grids. The workers of the heat supply grids section of Petrozavodskaya CHPP have carried out the most difficult work without opening the road bed running in confined area of the non-accessible crawl channel in order not to stop the movements of trolley buses and vehicles and not to prolong the terms of the hot water outage," Roman Kartoshkin explained, Chief Engineer of the TGC-1 Karelsky branch.

The second stage of heat supply grids replacement was completed within the framework of a three-year project on renovation of the double-pipe pipelines 1.6 km long with an increase in diameter at the area from Pervomaisky Prospect to Pavilion No. 1 and from CHPP to booster pump house No. 1. There were a temporary heat supply grid and a road constructed in the area around the railway.

The third stage of the renovation is planned for 2020 and will affect the most important heat pipeline of the city which provides hot water and heat to more than 200 thousand residents of Sulazhgora, Oktyabrsky District, the city centre, Zareka, Kukkovka and Golikovka.

We point out that the full hot water supply recovery depends on the operation of the utilities and management companies.


TGC-1 is a leading producer and supplier of electricity and heat in the North-West of Russia. TGC-1 comprises 53 power plants within four constituent entities of the Russian Federation: St. Petersburg, the Republic of Karelia, and Leningrad and Murmansk Oblasts.

The Karelsky branch of TGC-1 includes 16 hydroelectric power plants, which form three HPPs cascades: Vyg, Suna and Kem HPPs Cascades, as well as Petrozavodskaya combined heat and power plant. Hydropower potential of the region is developed in the basins of the rivers Suna, Vyg and Kem. Total capacity of TGC-1's plants in the Republic of Karelia: electricity — 833.7 MW, heat — 689 Gcal/h.